<template>
  <div :class="prefixCls">
    <quill-editor
      v-model="content"
      :ref="myQuillEditor"
      :options="editorOption"
      @blur="onEditorBlur($event)"
      @focus="onEditorFocus($event)"
      @ready="onEditorReady($event)"
      @change="onEditorChange($event)"
    ></quill-editor>
  </div>
</template>

<script>
import 'quill/dist/quill.core.css'
import 'quill/dist/quill.snow.css'
import 'quill/dist/quill.bubble.css'
import Quill from 'quill'
import { quillEditor } from 'vue-quill-editor'

import ImageResize from 'quill-image-resize-module'

Quill.register('modules/imageResize', ImageResize)

console.log(Quill)
// 工具栏配置
const toolbarOptions = [
  ['bold', 'italic', 'underline', 'strike'], // toggled buttons
  ['blockquote', 'code-block'],

  [{ header: 1 }, { header: 2 }], // custom button values
  [{ list: 'ordered' }, { list: 'bullet' }],
  [{ script: 'sub' }, { script: 'super' }], // superscript/subscript
  [{ indent: '-1' }, { indent: '+1' }], // outdent/indent
  [{ direction: 'rtl' }], // text direction

  [{ size: ['small', false, 'large', 'huge'] }], // custom dropdown
  [{ header: [1, 2, 3, 4, 5, 6, false] }],

  [{ color: [] }, { background: [] }], // dropdown with defaults from theme
  [{ font: [] }],
  [{ align: [] }],
  ['link', 'image'],
  ['clean'], // remove formatting button
]
export default {
  name: 'QuillEditor',
  components: {
    quillEditor,
  },
  props: {
    prefixCls: {
      type: String,
      default: 'ant-editor-quill',
    },
    // 表单校验用字段
    // eslint-disable-next-line
    value: {
      type: String,
    },
    myQuillEditor: {
      type: String,
    },
  },
  data() {
    /*富文本编辑图片上传配置*/
    const uploadConfig = {
      action: 'admin/sys-file/upload', // 必填参数 图片上传地址
      methods: 'POST', // 必填参数 图片上传方式
      token: this.$store.getters.token, // 可选参数 如果需要token验证，假设你的token有存放在sessionStorage
      name: 'file', // 必填参数 文件的参数名
      size: 5242880, // 可选参数   图片大小，单位为Kb, 1M = 1024Kb
      accept: 'image/png, image/gif, image/jpeg, image/bmp, image/x-icon', // 可选 可上传的图片格式
      Authorization: 'Bearer ' + this.$store.getters.token,
    }
    const handlers = {
      image: function image() {
        var self = this

        var fileInput = this.container.querySelector('input.ql-image[type=file]')
        if (fileInput === null) {
          fileInput = document.createElement('input')
          fileInput.setAttribute('type', 'file')
          // 设置图片参数名
          if (uploadConfig.name) {
            fileInput.setAttribute('name', uploadConfig.name)
          }
          // 可设置上传图片的格式
          fileInput.setAttribute('accept', uploadConfig.accept)
          fileInput.classList.add('ql-image')
          // 监听选择文件
          fileInput.addEventListener('change', function () {
            // 创建formData
            var formData = new FormData()
            formData.append(uploadConfig.name, fileInput.files[0])
            // 图片上传
            var xhr = new XMLHttpRequest()
            xhr.open(uploadConfig.methods, uploadConfig.action, true)

            if (uploadConfig.token) {
              xhr.setRequestHeader('token', uploadConfig.token) // 可以定义请求头带给后端
              xhr.setRequestHeader('Authorization', uploadConfig.Authorization)
            }
            // 上传数据成功，会触发
            xhr.onload = function (e) {
              if (xhr.status === 200) {
                var res = JSON.parse(xhr.responseText)
                let length = self.quill.getSelection(true).index
                //这里很重要，你图片上传成功后，img的src需要在这里添加，res.path就是你服务器返回的图片链接。
                console.log(res)
                self.quill.insertEmbed(length, 'image', res.data.url)
                self.quill.setSelection(length + 1)
              }
              fileInput.value = ''
            }
            // 开始上传数据
            xhr.upload.onloadstart = function (e) {
              fileInput.value = ''
            }
            // 当发生网络异常的时候会触发，如果上传数据的过程还未结束
            xhr.upload.onerror = function (e) {}
            // 上传数据完成（成功或者失败）时会触发
            xhr.upload.onloadend = function (e) {
              // console.log('上传结束')
            }
            xhr.send(formData)
          })
          this.container.appendChild(fileInput)
        }
        fileInput.click()
      },
    }
    return {
      content: null,
      editorOption: {
        modules: {
          toolbar: {
            container: toolbarOptions, // 工具栏
            handlers: handlers,
          },
          imageResize: {
            // 图片缩放比例
            displayStyles: {
              backgroundColor: 'black',
              border: 'none',
              color: 'white',
            },
            modules: ['Resize', 'DisplaySize', 'Toolbar'], // Resize 允许缩放， DisplaySize 缩放时显示像素 Toolbar 显示工具栏
          },
        },
      },
    }
  },
  methods: {
    onEditorBlur(quill) {
      console.log('editor blur!', quill)
    },
    onEditorFocus(quill) {
      // console.log('editor focus!', quill)
    },
    onEditorReady(quill) {
      console.log('editor ready!', quill)
      this.content = this.value
    },
    onEditorChange({ quill, html, text }) {
      // console.log('editor change!', quill, html, text)
      this.$emit('editorChange', quill, html, text)
    },
  },
  watch: {
    value(val) {
      this.content = val
    },
  },
}
</script>

<style lang="less" scoped>
@import url('../index.less');

/* 覆盖 quill 默认边框圆角为 ant 默认圆角，用于统一 ant 组件风格 */
.ant-editor-quill {
  /deep/ .ql-toolbar.ql-snow {
    border-radius: @border-radius-base @border-radius-base 0 0;
  }
  /deep/ .ql-container.ql-snow {
    border-radius: 0 0 @border-radius-base @border-radius-base;
  }
}
</style>

<style lang="less">
.ql-editor {
  height: 800px;
}
.ql-formats {
  line-height: normal;
}
</style>
